Answer:A
Step-by-step explanation:
 
        
             
        
        
        
Answer:
   13.636
Step-by-step explanation:
The area can be found using Heron's formula:
   A = √(s(s-a)(s-b)(s-c))
where s=(a+b+c)/2.
For the given triangle, ...
   a=9, b=4, c=12, s=(9+4+12)/2 = 12.5
   A = √(12.5(3.5)(8.5)(0.5)) = √185.9375 ≈ 13.636
The area of the triangle is about 13.636 square units.
 
        
             
        
        
        
Answer:
Step-by-step explanation:
<u>The balls - multiples of 3 are:</u>
<u>The probability of a multiple of 3 is:</u>
- 3 out of 10 or
- P = 3/10 = 30%
30% probability is in the range 0%-50% so this event is unlikely
 
        
                    
             
        
        
        
5/10 in 3 equivalent forms is: 1/2 2/4 4/8